| Name | Meaning | Gender | Origin |
|---|
| Poison | A destructive or fatal substance. | Unisex | |
| Pop | | Unisex | Hebrew |
| Pops | | Unisex | |
| Pud | a shortened form of the slang term pud-pud | Unisex | |
| Pudge | | Unisex | |
| Putt-Putt | | Unisex | Hebrew |
| Rabbit | | Unisex | |
| Rafael | God has healed.
| Male | Spanish |
| Rajah | A prince, king or ruler in India | Male | Hindi |
| Ramiro | Judicious
| Male | Portuguese |
| Ramon | Form of Raymond Guards wisely.
| Male | Catalan |
| Rat | | Unisex | |
| Red | A primary colour resembling the colour of blood | Male | Color |
| Reggie | counsel power | Male | English |
| Reginald | powerful one | Male | English |
| Rick | aka Richard, Dick and Little Man | Male | English |
| Rickey | Powerful, Brave Ruler | Unisex | English |
| Ricky | dominant or peaceful ruler | Male | English |
| Robbie | Abbreviation of Robert Famed: bright: shining.
| Male | |
| Robert | Famed: bright: shining. 14th-century King Robert the Bruce. Robert Burns the poet.
| Male | English |
| Robin | Famed: bright: shining Form of Robert popular since the medieval days of Robin Hood. Robinson: (English) Son of Robert Famed: bright: shining. Surname.
| Male | |
| Rock | Italian from German, rest | Male | English |
| Ron | Ronald | Unisex | |
| Sam | to hear | Male | English |
| Sammy | Hebrew, told by God | Male | English |